Stop and waste cock



H. A. GORHAM.

STOP AND WASTE COCK.

. PatentedrOct. 27, 1885.

(No Model.)

No. 329,161.v

`Nrrn STATES ATnNr reich.

HENRY ATVVOOD GORHAM, OF BOSTON, MASSACHUSETTS.

STOP AND WASTE COCK.

.SPECIFICATION forming part of Letters Patent No. 329,161, dated October 27, 1885.

Application filed April 3, 1885. Serial No. 161,106.

To a/ZZ whom it may concern.-

Be it known that I, HENRY A'rwoon Gon- HAM, of Boston, (East Somerville,) in the county of Middlesex, of the Commonwealth of Massachusetts, have invented a new and useful Improvement in Stop and 'Vaste Cocks; and I do hereby declare thesarne to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a side view, and Fig?. a longitudinal section, of a cock provided with my invention, the nature of which is dened in the claims hereinafter presented. Fig. 3 is a side view of the valve-stem and its valves as separate from the body of the cock.

My improvement relatesv to the class of cocks that are provided with means of drawing water from the eduction-pipes after the closing of their valves upon their seats, such being to prevent the pipe or pipes supplied through the cock from being burst by water freezing in them.

In the drawings, A represents the hollow body or case of the cock, it having within and obliquely across its interior a partition, a, having a circular passage,b, extending through it in the part of it that is at right angles to the valve-stem, there being on the under side of such partition a seat, s, for the main valve D. The said body is open at its ends, and there provided with female screws c c, for coupling the body to an induction-pipe, and also to an eduction-pipe. The said body is also open below the passage b, and has screwed into the opening a cap, B, having within it concentrically a cylindrical chamber, d, from whose bottom a draining-passage, e, extends downward, and is or may be screw-threaded in its lower part to connect a drain-pipe to it. At the upper end of the chamber (l is an annular valve-seat,f, to co-operate with an auxiliary valve, g, fixed on the lower end of a short spindle, It, which at its upper end has a flange, z', extending from and around it.- The said auxiliary valve is fastened to its spindle by a headed screw, 7c, whose shank goes through the valve and screws into the spindle. Circumscribing the said spindle h is a screw-nut, Z, that screws upon the lower part of the main valvespindle C, below thernain valve D, fixed' thereto, the screw m for receiving the valve and nut being a right-threaded one. The

(No model.)

packing or washer to make awater-t-ightjoint around the spindle C. The said spindle ex tends up through and somewhat above the said cap, and at its upper end the spindle is provided with a handle, H, iixed thereon.

When the cock is in use, the water enters the case and passes into the space o directly over the partition. On turning the main valve-stem to the right its valve D will be revolved with it and be moved downward away from its seat, in order to allow the water to flow dow-n through the partition andinto the r space p below it, and thence to the educt q of the cock.

Vhile the main valve is close against its seat the auxiliary valve will be off its seat a short distance, it being raised therefrom by the `spindle O, drawing upward with it the screw-nut l, and causing such nut, by bearing against the flange t', to lift the auxiliary valve. As soon, however, as the main valve is depressed frorn its seat, so as to let the auxiliary valve down upon its seat, the spring within the 1nain-valve spindle will, by being contracted while the spindle further descends, bear or keep the auxiliary valve down close upon its seat, and thereby prevent the escape of any watervthrough the said seat. On the main valve being raised nearly up to its seat the auxiliary valve will be pulled upward and will continue to rise until the main valve closes on its seat, from which it will be seen that when the main valve is closed on its seat whatever water may be in the pipe or pipes in advance of the main-valve seat will drain therefrom through the auxiliary valve-seat.

l. The combination of the cock body or case and its perforatedpartition, and 'the main valve and its `spindle applied thereto, with the draining-educt and its auxiliary valve-seat inthe lower part of such case, and with the auxiliary valve, its hanged spindle, lifting screw-nut, and depressing-spring applied to IOO the main -valve spindle and the said auxto the main-valve spindle, and t0 operate with iliary valve-seat, substantially as setforth, such auxiliary valve-seat, and the main-valve 2. The combination, with the cock body or spindle, substantially as represented, the said I5 case A, having in it the perforated partition case having, besides its draining-eduot, an in- 5 a, and with the main valve D, arranged below duet to lead Water into the space above and the partition, and having its spindle C proan educt to discharge water from the space vided with a screw, t, screwed into such case, below the said partition, as explained. ofthe cap B, screwed into the lower part of such T ease, and provided with the auxiliary valve- HENRY AT OOD GORI-IAM' Io seatf, and its draining-educt, and of the aux- Witnesses:

. iliary valve g, its flanged spindle h, lifting R. H. EDDY,

screw-nut Z, and depressing-spring E, applied ERNEST B. PRATT. 

